http://www.ringolab.com/note/daiya/2013/04/iphone-heart-beat-rate.html

http://www.amazon.co.jp/exec/obidos/ASIN/4313313877/hatena-be-22/ref=nosim

http://www.daily.co.jp/society/human_interest/2013/04/25/0005928416.shtml

http://headlines.yahoo.co.jp/hl?a=20130427-00000023-mailo-l14

http://www.courts.go.jp/sapporo-h/about/osirase/kouji/index.html